📝 Update changelogs

Signed-off-by: Daniel <845765@qq.com>

app/changelogs/v3.3.4/v3.3.4.md

@@ -28,6 +28,7 @@ Below are the detailed changes in this version.
 * [Prompt when the user attempts to create a workspace in the root directory of the disk](https://github.com/siyuan-note/siyuan/issues/15976)
 * [`History Retention Days` supports a maximum setting of 3650](https://github.com/siyuan-note/siyuan/issues/15979)
 * [Improve font loading](https://github.com/siyuan-note/siyuan/issues/15981)
+* [Improve return to desktop gesture on Android](https://github.com/siyuan-note/siyuan/issues/15991)
 
 ### Bugfix
 

app/changelogs/v3.3.4/v3.3.4_zh_CHT.md

@@ -28,6 +28,7 @@
 * [嘗試在磁碟根目錄建立工作空間時提示使用者](https://github.com/siyuan-note/siyuan/issues/15976)
 * [`歷史保留天數` 最大支援 3650](https://github.com/siyuan-note/siyuan/issues/15979)
 * [改進字體載入](https://github.com/siyuan-note/siyuan/issues/15981)
+* [改進 Android 端回傳桌面手勢](https://github.com/siyuan-note/siyuan/issues/15991)
 
 ### 修復缺陷
 

app/changelogs/v3.3.4/v3.3.4_zh_CN.md

@@ -28,6 +28,7 @@
 * [尝试在磁盘根目录创建工作空间时提示用户](https://github.com/siyuan-note/siyuan/issues/15976)
 * [`历史保留天数` 最大支持 3650](https://github.com/siyuan-note/siyuan/issues/15979)
 * [改进字体加载](https://github.com/siyuan-note/siyuan/issues/15981)
+* [改进 Android 端返回桌面手势](https://github.com/siyuan-note/siyuan/issues/15991)
 
 ### 修复缺陷